Central Office Exchange (NXX)

+1 (256) 631-XXXX

Serving Huntsville, Alabama, United States • Carrier: Corr Wireless Communications

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+1 (256) 631 -

Sample Active Numbers in this Prefix

Random representative sampling of telephone lines in the 1-256-631 block

256-631 0086
256-631 0504
256-631 0626
256-631 1082
256-631 1230
256-631 1253
256-631 1261
256-631 1747
256-631 2497
256-631 2713
256-631 2828
256-631 2839
256-631 2875
256-631 2966
256-631 3197
256-631 3675
256-631 4168
256-631 4431
256-631 4520
256-631 4626
256-631 4788
256-631 4997
256-631 5064
256-631 5374
256-631 6072
256-631 6161
256-631 6493
256-631 7105
256-631 7118
256-631 7450
256-631 7520
256-631 7839
256-631 8238
256-631 8566
256-631 8720
256-631 8723
256-631 9161
256-631 9701
256-631 9764
256-631 9831

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Telecommunication Guide for Exchange 256-631

Under the North American Numbering Plan (NANP), a standard 10-digit telephone number is organized as NPA-NXX-XXXX:

  • NPA (Numbering Plan Area): 256 identifies the geographic region within Alabama.
  • NXX (Central Office Exchange): 631 identifies the local telephone exchange or switching office serving Huntsville, Alabama.
  • XXXX (Subscriber Line Number): 10,000 distinct telephone lines (ranging from 0000 to 9999) are routed through this exchange.
How to Correctly Dial Numbers in this Prefix:
Call Origin Dialing Instructions Example
Local or Domestic (US/Canada) Dial 1 + 10-Digit Number 1 (256) 631-XXXX
Mobile / Wireless Devices Dial with international plus symbol +1 256 631 XXXX
International Callers Local exit code + 1 + Number 00 1 256 631 XXXX

Frequently Asked Questions

The registered service provider for this exchange is Corr Wireless Communications. Note that individual line numbers may have been transferred to other providers via Local Number Portability (LNP).
Calls from this prefix could originate from local businesses, hospitals, friends, or automated dialers. If you received an unsolicited call from an unknown party in this exchange, enter the full 4 digits in our search box above to check for community scam or telemarketer reports.

Exchange Information

  • Country: Unites States (+1)
  • State: Alabama
  • City / Area: Huntsville
  • Area Code: 256
  • Prefix (NXX): 631
  • Carrier: Corr Wireless Communications
  • Type: Wireless
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Area Code 256

Explore other central office exchanges and municipalities covered by area code 256.

View All 256 Prefixes